Why People Write SEO Articles

Search engine optimization techniques change significantly over time.
Many SEO experts write about the changing field of search engine optimization
in article format because articles:

Work well to teach people about SEO;

Help build trust with prospective clients;

Introduce your work to a new group of people;

Help build link popularity.

Two notes of caution with SEO articles:

SEO articles can and do become dated. If you are reading something
old make sure that that data is still correct today.

Frequently it is easy to take the concept of the article too far
to where it hurts other aspects of your site or business. For example
a person may tell you to use keyword rich text and you may end up
writing your site more for a robot than person.